Technical data

3-16 Computer Group Literature Center Web Site
Test Descriptions
3
Initialization Error: Transmit Descriptor Ring
address mismatch
Controller not properly
storing the address of the
Transmit Descriptor ring
after initialization.
Not enough diagnostics memory to accommodate DEC
buffers.
There was not enough
diagnostics memory space
available for use by the
Initialization block,
Descriptor Rings, and
buffers.
PCI XXX register contains invalid data.
Detected Value:
NNN Should Be: NNN
The PCI Header Register, as
listed, contains a bad value,
other than a fixed,
predetermined constant.
May indicate a bad device,
or faulty interface to it.
Interrupt Line register mismatch error
Value sent:
NNN Value returned: NNN
The value read is not the
same as what was written,
indicating that there is a
problem storing data in the
PCI Header register space.
Unable to set(reset) the PERREN(SERREN) bit in
the PCI command register.
Inability to toggle bits in the
PCI command register,
which may indicate faulty
interface to the PCI header
registers.
Unsolicited Exception:
Exception Time IP
NNN
Vector NNN
An interrupt occurred where
it was not supposed to,
usually because of a bus
error, indicating a basic
system problem interfacing
to the controller.
Transmit of Ethernet Packet Failed: Lost Carrier
(LCAR)
Carrier Signal got lost
during a packet transmit, in
AUI or TP (twisted pair)
mode.
Table 3-4. DEC Error Messages (Continued)
Error Message Symptom or Cause